//package com.ccstay.cyou.interceptor;
//
//import org.apache.shiro.web.filter.authc.BasicHttpAuthenticationFilter;
//import org.springframework.web.bind.annotation.RequestMethod;
//
//import javax.servlet.ServletRequest;
//import javax.servlet.ServletResponse;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//
//public class JWTFilter extends BasicHttpAuthenticationFilter {
//    // 登录标识
//    private static String LOGIN_SIGN = "Authorization";
//
//    /**
//     * 检测用户是否登录
//     * 检测header里面是否包含Authorization字段即可
//     *
//     * @param request
//     * @param response
//     * @return
//     */
//    @Override
//    protected boolean isLoginAttempt(ServletRequest request, ServletResponse response) {
//        HttpServletRequest req = (HttpServletRequest) request;
//
//        String authorization = req.getHeader(LOGIN_SIGN);
//
//        return authorization != null;
//
//    }
//
//    @Override
//    protected boolean executeLogin(ServletRequest request, ServletResponse response) throws Exception {
//        HttpServletRequest req = (HttpServletRequest) request;
//        String header = req.getHeader(LOGIN_SIGN);
//
//        JWTToken token = new JWTToken(header);
//
//        getSubject(request, response).login(token);
//
//        return true;
//    }
//
//    @Override
//    protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) {
//        if (isLoginAttempt(request, response)) {
//            try {
//                executeLogin(request, response);
//            } catch (Exception e) {
//                throw new TSharkException("登录权限不足！", e);
//            }
//        }
//
//        return true;
//    }
//
//    /**
//     * 对跨域提供支持
//     *
//     * @param request
//     * @param response
//     * @return
//     * @throws Exception
//     */
//    @Override
//    protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception {
//        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
//        HttpServletResponse httpServletResponse = (HttpServletResponse) response;
//        httpServletResponse.setHeader("Access-control-Allow-Origin", httpServletRequest.getHeader("Origin"));
//        httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE");
//        httpServletResponse.setHeader("Access-Control-Allow-Headers", httpServletRequest.getHeader("Access-Control-Request-Headers"));
//        // 跨域时会首先发送一个option请求，这里我们给option请求直接返回正常状态
//        if (httpServletRequest.getMethod().equals(RequestMethod.OPTIONS.name())) {
//            httpServletResponse.setStatus(HttpStatus.OK.value());
//            return false;
//        }
//        return super.preHandle(request, response);
//    }
//
//}
